Arterial Supply to Sinuatrial and Atrioventricular Nodes: Imaging with Multidetector CT

Saremi, Farhood; Abolhoda, Amir; Ashikyan, Oganes; Milliken, Jeffrey C.; Narula, Jagat; Gurudevan, Swaminatha V.; Kaushal, Kalpana; Raney, Aidan

doi:10.1148/radiol.2461070030

Cited by 63 publications

(71 citation statements)

References 37 publications

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“…The proximal caliber of SAN observed in this study is similar to the reported by Zangh et al [31], but slightly minor than others [8,14,30,33] reporting a caliper of 1.4-1.7 mm. These differences may be given by preparation and measuring methods, also in the height-weight people's characteristics.…”

Section: Discussionsupporting

confidence: 89%

“…Equally, we noted a RCA short finishing as subsequent branch of the right ventricle in the 8.6% similar to other works [1][2][3]. We consider that a vascular compensation is inferred when RCA finish in short branches on the diaphragmatic face of the hearth and additional supplies Saremi et al [8] and Cademartiri et al [34]. Futami [35] also reported a double origin in 23% of Japanese population.…”

Section: Discussionsupporting

confidence: 88%

“…Cardiac artery bridge grafts outcome (poor perfusion, anastomosis, increased inhospital deaths) depends in great manner of the coronary calibers. Similarly, procedures as stenting and balloon angioplasty could present complicatedness related to smaller calibers that can be associated with repetitive revascularization and higher risk of restenosis [8].…”

Section: Discussionmentioning

confidence: 99%

“…There is agreement that ANA origin is influenced by coronary dominance [8,14,15,30,32,35,37]. In right dominance, ANA originates from the left retroventricular branch.…”

Section: Discussionmentioning

confidence: 99%

“…In these cases larger caliber and length is observed irrigating upper and middle anterior surface of the right ventricle [6,7]. SNA is part of the atrial arteries' group usually arising from the anterior segments of both coronary arteries, although is more frequent emerging from RCA in 55%-73% [8,9]. RMA originates before or at the level of the sharp edge of the heart and can reach the heart apex.…”

Section: Methodsmentioning

confidence: 99%

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Right coronary artery anatomy: anatomical and morphometric analysis

Ballesteros¹,

Ramírez²,

Quintero³

2011

Rev Bras Cir Cardiovasc

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Background: It is necessary knowing the large variability of right coronary (RCA) artery specialty for its implications in surgical procedures and clinic events. This variability is usually related to the length, branches quantity, origin and irrigated territories.Objective: To evaluate by direct examination the morphologic expression of RCA in Colombian people.Methods: RCA were measured in 221 fresh hearts by RCA ostium canalization with polyester synthetic resin that was injected in their branches.Results: The caliber of the RCA proximal segment and at the level of the acute angle of the heart was 3.42 ± 0.66 mm and 2.9 ± 0.50 mm, respectively. It ended between crux cordis and the left margin in 75.6% of specimens. Posterior interventricular artery (PIA) reached the inferior third, or the apex, or the anterior interventricular sulcus in 149 (67.4%) cases. Sinoatrial node artery (SNA) originated in the right coronary in 134 (60.6%) cases, 77 (34.9%) from circumflex artery (CxA) and from both in 10 (4.5%). Posterior right diagonal artery (PRDA) was noted in 38 (17.2%) hearts, but only 6% of the sample with long PIA, concomitantly presented the PRDA (P = 0.001). In right dominance SNA were originated from RCA in 54.7% and form CxA in 46.3% (P = 0.06).Conclusions: Caliber of the RCA and its branches is lesser than the majority of previous studies, while the PRDA frequency is slightly higher than the reported in literature.Clinical and pathological scenarios by these variations should be taken into account: hemodynamic procedures, cardiac surgery and arrhythmias from coronary occlusive disease.Descriptors: Coronary Vessels. Coronary Circulation. Atrioventricular Node. Sinoatrial Node. ResumoIntrodução: É necessário conhecer a grande variabilidade da artéria coronária direita (ACD), especialmente por suas implicações nos procedimentos cirúrgicos e eventos clínicos. Esta variabilidade está geralmente relacionada à extensão, à quantidade de ramos, à origem e aos territórios irrigados.Objetivo: Avaliar por exame direto a expressão morfológica da ACD em sujeitos colombianos.Métodos: As ACD foram medidas em 221 corações frescos pela canalização do óstio da ACD com uma resina de poliéster sintético que foi injetada em seus ramos.Resultados: O calibre do segmento proximal da ACD e ao nível do ângulo agudo do coração foi de 3,42 ± 0,66 mm e 2,9 ± 0,50 mm, respectivamente. A ACD terminou entre a crux cordis e a margem esquerda em 75,6% da amostra. Rev Bras Cir Cardiovasc 2011;26(2):230-7 RCA near of the acute margin of the heart and adopt an oblique path on the posterior wall of the right ventricle to reach the middle third of posterior interventricular groove contributing to the irrigation of the lower segment of the diaphragmatic heart face [10][11][12][13]. The branch of the ANA start in the "inverted U" segment of the RCA located in the crux cordis (73%-85%) and the rest coming from the terminal branch of the CxA [14,15].The importance of the cardiac irrigation variability in special the RCA is supported by s...

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Section: Discussionsupporting

confidence: 89%

Section: Discussionsupporting

confidence: 88%

Section: Discussionmentioning

confidence: 99%

“…There is agreement that ANA origin is influenced by coronary dominance [8,14,15,30,32,35,37]. In right dominance, ANA originates from the left retroventricular branch.…”

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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